Pipe-crimping machine



Patented Mar. 16,1880.

17 1, B. 4/2 nay/38886;. Izzvenibrv UNITED STATES PATENT OFF CE.

FRANK n. PAGKHAM, or MEOHANIOSBURG, ASSIGNOR T JOSEPH B. VAN

nonnn, or FREMONT, onro.

PIPE-CRIMPING MACHINE.

SPECIFICATION forming part of Letters Patent No. 225,636, dated March 16, 1880.

Application filed November 17, 1879.

To all whom it may concern Be it known that I, FRANK R. PACKHAM, of Mechanicsburg, in the county of Champaign and State of Ohio, have invented certain Improvements in Pipe Crimping Machines, of which thefollowingis a specification.

This invention relates to pipe-crimping machines, and more particularly to improvements on the machines for which Letters Patent have been granted at various times to J. E. Hunter and to myself 5 and it consists in a pair of reversible tapered rolls working together at their circumference, and arranged with the small end of one roll opposite the large end of the other, whereby the line of junction is caused to stand at an inclination to the axis of the pipe; in means for adjusting the distance between the rolls while in operation; in a peculiar manner of imparting motion to the driven zo'roll, and in various other details, as hereinafter explained.

The objects of the invention are to increase the durability and efficiency of the machine and to permit a change in the degree of the taper given to the pipe.

In the accompanying drawings, Figure 1 represents a side elevation of my improved machine; Fig. 2, a longitudinal vertical section of the same, and Fig. 3 a view of one of 0 the rolls and its pinion detached or removed from the machine.

As machines for this purpose are commonly constructed, they consist either of a pair of tapered rolls with like ends working together,

3 5 or a pair of cylindrical rolls, as in my former machine. The objection to the first of these plans is that one end only of the rolls can be utilized, or, in other words, they cannot be reversed, when worn, end for end; and to the 40 second that not unfrequently, and particularly when ogee rolls are caused to operate upon the pipe simultaneously with the fluting or crimping rolls, the pipe is apt to run off sidewise or buckle.

5 To overcome these difficulties I employ two tapered rolls; but, instead of arranging them, as heretofore, with the large ends together, I place the large end of one roll opposite the small end of the other in the manner indicated in the accompanying drawings, in which- A represents a suitable casting or supporting-frame, and B G the rolls.

By the above arrangement it will be seen I am enabled to give the line of junction of the rolls an inclination exactly corresponding to that produced on the end of the pipe by the crimping operation, and consequently the pipe will be caused to travel smoothly and evenly without danger of buckling or running off. The rolls may be mounted and driven in any convenient manner, .and used either with or without the ogee rolls D E, provided only that the large end of one be placed opposite the small end of the other.

In practice I prefer to mount and operate the rolls in the manner indicated in the drawings, as it permits the ready adjustment of the rolls while in operation, and also permits their ready removal and reversal.

F represents a cylindrical shaft extending longitudinally. through the lower part of the frame or casting A, carrying at one end the crimpingroll B and ogee roll D, and provided at its opposite end with a crank or handle by which to turn it. From this shaft the upper roll, 0, is driven by means of pinions or gearing a b, as shown in Fig.2, said pinions being connected with the rolls in a manner presently to be described.

G represents a shaft, the outer half of which is of cylindrical form and receives the crimping-roll O and ogee roll E, while the other half is of a square form and extends into the recessed upper portion of the frame or casting 85 A, the side walls of said recess being vertical and serving to prevent the shaft G from turning, but allowing it to move freely up and down.

At its inner end the square portion of the 0 shaft G is pierced with a vertical hole, which is tapped to receive a pointed screw-stem, c, the point of which bears in a seat or recess, d, in the frame or casting A, as shown. The point of the screw is pressed firmly to its seat 5 by means of a spiral spring, 6, which encircles the head of the screw and extends into a cavity or recess formed around the same in the upper side of the shaft G, while the other end of the spring bears against the frame above, or, preferably, against a detachable cap-piece, H, which may be readily removed to permit the adjustment of the screw 0. The point of the screw 0 thus becomes apivot, upon which the shaft G is rocked when being adjusted vertically, the principal movement of the shaft being consequently at its extreme outer end, where the pipe is entered between the rolls.

In order that the rolls may separate when the pressure applied in operation is removed, a flat spring, f, is secured to the underside of the shaft 'G, as shown in Fig. 2, the rear end of the spring being perforated and slipped over the end of the screw 0, and held in place by a nut, g, screwed thereon, said nut also serving as a jam-nut to prevent the screw 0 from workin g loose and changing the position of shaft G, and the free end of the spring bearing in the bottom of the recess in which the shaft is mounted. In this manner the outer end of the shaft G is urged upward when relieved from pressure, the usual screw-stem I being passed through the top of the frame or casting A, and serving, when turned, to force down the shaft G, and thus depress the roll 0 bodily. In order to transmit motion from the lower or driving shaft, F, to the rolls, and at the same time permit the latter to be readily exchanged end for end, and from one shaft to the other, which latter is necessary in order to give them their former position, each shaft is furnished with a pinion, as shown at a and I), Fig. 2. The lower pinion, a, is locked to the shaft F by a pin or feather, and is thereby caused to turn with said shaft, while the pinion b is free to turn on the shaft G. Each of the pinions is furnished with a projecting pin or stud, h, adapted to enter a hole or recess, 13, in the end of the roll which it drives, as shown in Figs. 2 and 3; and in order that the rolls may be reversed end for end and so used, both ends of each roll are provided with such holes or recesses, as shown in Fig. 2.

By the above construction it will be seen I am enabled readily to reverse or exchange the rollswithout disturbing the gearing.

The ogee rolls may be used or dispensed with, as desired, and when used may be caused to turn with the adjoining crimpingroll by means of a projecting pin or stud entering the outer end of the roll in the same manner as the pin h, or by other convenient means.

In practice it is preferred to fasten the lower ogee roll only, and this may be done as above mentioned, or by simply turning up the nut on the end of the shaft F sufficientlytight to lock the rolls B and D firmly together.

A screw-stem, J passed through the top of the frame or casting, serves as an adjustable stop to limit the separation of the rolls, and a guide or gage, K, is secured adjustably to the side of the frame or casting A, to regulate the distance or extent of the crimping.

The machine, as above described, is intended to carry the pipe around thelower roll; but y it is apparent that by placing the small end of the upper roll next the frame or casting A, and the large end of lower roll also next the frame, the inclination of their line of meeting will be reversed and the machine adapted to carry the pipe around the upper roll.

This arrangement could be made by simply turning the rolls end for end without changing them from one shaft to the other; but it is desirable that the feeding-roll should be the driving-roll, or mounted upon the drivingshaft, hence, if the present arrangement be reversed, it is desirable, also, to reverse the positions of the shafts F and G.

The machine being thus constructed, the end of the pipe is passed over and around the lower roll, B, bringing one side of the pipe between the rolls B and O. The depressingscrew I is turned, bearing down the roll 0 to a working position, and the crank being turned the pipe is crimped. It is then released by turning back the screw-stem I.

By removing the cap H and turning the screw 0 up or down, the space between the rolls when in their working position may be made to differ at the opposite ends of the roll.

When one'end of the rolls becomes worn, it is simply necessary to exchange and reverse them, as above described, and the machine is rendered as efficient as when new, without expense.

I am aware that tapered rolls have hitherto been employed for crimping pipe, and hence I do not claim such rolls broadly; but I am not aware that rolls have ever before been arranged in such manner as to form a line of junction inclined in relation to the axis of the pipeoperated upon, and this constitutes an essential feature of my present invention.

Having thus described my invention, what I claim is- I. In a pipe-crimping machine, the combination of two longitudinally-corrugated rolls tapered in opposite directions, as described and shown, whereby they are caused to meet on a line at an angle to their axes.

2. In a pipe-crimping machine, the combination of a driving-roll and a driven-roll, both provided with longitudinal corrugations, and made reversible end for end, arranged one with its small end opposite the large end of the other.

3. The combination of the two longitudinally-corrugated rolls, one adjustable bodily to and from the other, and a supporting-shaft for one of said rolls mounted on a pivot or bearing adjustable to and from the line of the axis of the other roll, substantially as described and shown.

I 4:. In combination with the shaft having its end supported upon a point seated in a 'socket, as described, the spring 0, bearing upon the shaft and serving to hold the point in its seat.

5. In combination with the shaft provided with the screw 0 and spring 6, the spring f, for raising the shaft when relieved from pressure.

6. In combination with the shaft G, provided with spring f and screw 0, the nut d, serving both to retain the spring in place and as a jam-nut to prevent the screw from working loose.

7. In combination with the shaft G, provided with the screw 0 and spring 6, and mounted in the frame A, the detachable cap H.

8. A crimping-roll provided with one or more recesses in each end adapted to receive a pinor stud, whereby the roll is rendered capable of being turned end for end, and connected with the pinion in either position.

9. In a machine for crimping pipe, the combination of a driving-shaft, a non-rotating 1'5 firmly to the roll thereon, and gearing with 20 the first pinion.

FRANK RUSSELL PAGKHAM.

Witnesses:

E. D. MORGAN, THOMAS MORGAN. 

